The M119 gas engine doesn't have a ratchet style tensioner, & yes they can jump & cause problems just like M116/117. The inner rail seams to break on this engine.

Most diesels dont need rails on normal chain replacement.

Benz issued a S.I. on all diesels from 7/92 thru 7/94 on possible chain failure. The only other engine they issued a bulletin on is the 1984-88 190E 2.3 8V, timing chain inspection every 60K miles is recommended.

------------------
MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS DEALER M.B. TECH
190E 2.3 ITS RACECAR
1986 190E 16V